Carpenter&#39;s hammer



ApB. COLEMAN. CARPENTERS HAMMER.

APPLICATION FILED NOV. 22. 1.920.

1,425,369. Y PatentedAug:8,192z

CfZ/ @Zeman A narran stares ARTHUR BERTRAM COLEMAN, 0F GOSNEL'LS, N EAR PERTH, AUSTRALIA.

CARIENTERS HAMMER.

Specication 'of Letters Patent.

Patented Aug. 8, 19,22.

Application led November 22, 1920. Serial No. 425,826.

T 0 all whom t may concern Be it known that I, ARTHUR BERTRAM COLEMAN, a subject of the King of Great Britain, residing at l/Vheatley Street, Gosnells, near Perth, l/Vestern Australia, Commonwealth of Australia, have invented certain new and useful Improvements in Carpenters Hammers, of which the following is a specification.

This invention relates to carpenters hammers and its object is to provide integral structural means whereby said hammers are enabled to fully and totally effect the extraction of nails without the aid of separate or auxiliary fulcrums as is now the present practice with the existing type of a single clawed hammer. This invention consists in integrally forming the hammer with a multiple or a plurality of pairs of claws which are nested and arranged in a stepped manner beneath and at the rear of the ordinary and primary pair of claws thus providing structural means for eifecting the total extraction of nails at their extreme projectional `lengths by successively engaging the head of the nail with the repetitional'or plurality of claws. By the use of this invention the nail is not bent or otherwise injured by or during the extraction action hence one economic advantage of the invention consists in economy oit' nails as the nails when extracted by this invention aretit for vfurther use. A further advantage of this invention resides in that the hammer is enabled to be operatedclose upto the nail thus reducing the unit of movement of the hammer during the process of the nail extraction. The invention will now be explained with the aid of the attached drawings wherein Fig. 1- is a perspective view showing a hammer made in accord with my invention. Fig. 2- is a view in elevation showing the hammer in its operative positon at the final extraction of the nail and in said position the nail maintains its straight vertical position.

Referring to said drawings the hammer as a is integrally formed with a. multiple or plurality ot rearwardly extending pairs of claws as Z)- cand Z preferably of the shape and design as shown and which pairs of claws are arranged in a stepped manner and they rearwardly extend from the ordinary or primary pair of claws as e. The pairs of claws o c and Z vary in angular disposition from the primary claws e to the rearmost pair of claws d, and the grooves between these pairs of supplemental claws increase in depth from the minimum grooved claws Z) to the deeper grooved claws d.

These claws extend from their tips to their common root line orv groove as 7" and wherein and whereat the head of the nail as a' is gripped. In. Fig. Q the nail x is shown as being gripped by the rear pair of claws as Z and which claws d eiicect the iinal or total extraction of the nail and itA will be clearly seen therefrom' that said nail a; maintains its true vertical and straight position at and during its final extraction and Vis withdrawn in an uninjured conditionlt will be further seen that the hammer at such final position of extraction is close up to its work on the nail and only requires to be brought to approximately its vertical position to eitect such total extraction of the nail thus requiring a short unit of movement in contradistinction to the present necessary long unit of movement with hammers of the present type of construction.l

What I claim as my invention and desire to secure by Letters Patent is- A hammer having the usual primary nail drawing claws projecting from the end thereof and also formed with a plurality of rearwardly extending supplemental pairs of claws arranged in stepped disposition and having nail grooves therein increasing in depth from the minimum depth in the pairl of claws adjacent to the usual vclaws to the maximum depth of the groove in the rearmost pair of claws7 whereby the extraction of nails is effected by engagement of each nail throughout its length to obviate bending of the nail during extraction.

In testimony whereof I have hereunto set my hand in witnesses.

ARTHUR BERTRAM COLEMAN.

Witnesses:

RICHARD SPARROW, FRED H. `LAMBERT.

presence of two subscribing 

